12142311131 has 4 divisors (see below), whose sum is σ = 12143740992. Its totient is φ = 12140881272.

The previous prime is 12142311121. The next prime is 12142311143. The reversal of 12142311131 is 13111324121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12142311131 - 2⁶ = 12142311067 is a prime.

It is a super-2 number, since 2×12142311131² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12142311121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 702116 + ... + 719201.

It is an arithmetic number, because the mean of its divisors is an integer number (3035935248).

Almost surely, 2^12142311131 is an apocalyptic number.

12142311131 is a deficient number, since it is larger than the sum of its proper divisors (1429861).

12142311131 is an equidigital number, since it uses as much as digits as its factorization.

12142311131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1429860.

The product of its digits is 144, while the sum is 20.

Adding to 12142311131 its reverse (13111324121), we get a palindrome (25253635252).

The spelling of 12142311131 in words is "twelve billion, one hundred forty-two million, three hundred eleven thousand, one hundred thirty-one".